102012010220121 has 4 divisors (see below), whose sum is σ = 136016013626832. Its totient is φ = 68008006813412.

The previous prime is 102012010220053. The next prime is 102012010220149. The reversal of 102012010220121 is 121022010210201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102012010220121 - 2¹⁴ = 102012010203737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102012010220121.

It is not an unprimeable number, because it can be changed into a prime (102012010220191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17002001703351 + ... + 17002001703356.

It is an arithmetic number, because the mean of its divisors is an integer number (34004003406708).

Almost surely, 2^{102012010220121} is an apocalyptic number.

It is an amenable number.

102012010220121 is a deficient number, since it is larger than the sum of its proper divisors (34004003406711).

102012010220121 is an equidigital number, since it uses as much as digits as its factorization.

102012010220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34004003406710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102012010220121 its reverse (121022010210201), we get a palindrome (223034020430322).

The spelling of 102012010220121 in words is "one hundred two trillion, twelve billion, ten million, two hundred twenty thousand, one hundred twenty-one".